Andrzej Kaczmarek commented on MYNEWT-887:

[~IzidorM] it would be good to check what happens over HCI, i.e. whether host 
can supply data fast enough or if there is something from controller that 
prevents host from sending new data.

The easiest way would be probably to use btmon for this, here's short guide how 
to set it up: [https://www.codecoup.pl/blog/support-for-btmon-in-mynewt/]

You can either just copy log from console or write complete trace in btsnoop 
format to file using '-w' switch to btmon.

> Sending multiple notifications in short time result in notifications getting 
> lost
> ---------------------------------------------------------------------------------
>                 Key: MYNEWT-887
>                 URL: https://issues.apache.org/jira/browse/MYNEWT-887
>             Project: Mynewt
>          Issue Type: Bug
>      Security Level: Public(Viewable by anyone) 
>          Components: Nimble
>            Reporter: Izidor Makuc
>            Assignee: Andrzej Kaczmarek
>            Priority: Critical
>              Labels: NimBLE
> when I send notifications (with ble_gattc_notify) in tight loop only some of 
> them are sent.
> This was observed when I was trying to send 30 notifications per second. I 
> only receive around 8 from them every second.
> The problem was reproduced by the slack user sjanc.

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